Pdfly
Optimize PDF

Compress PDF

Reduce PDF file size while keeping quality.

  • Free forever, no signup
  • Runs in your browser — private by design
  • Works on every device and browser

Why use Pdfly's Compress PDF?

Built with the same craft as a native app — in a browser tab.

Lightning fast

Runs in your browser using WebAssembly — no waiting rooms.

Private & secure

Files never leave your device for most operations.

No signup

Use every tool anonymously with zero data collection.

Beautifully simple

A distraction-free workspace built for focus.

How to compress pdf in 3 steps

Simple, fast, and totally free.

  1. 1Step 1

    Upload your file

    Drag and drop into the Compress PDF dropzone above, or click to browse from your device.

  2. 2Step 2

    Adjust the options

    Reorder, choose ranges, quality or formats depending on the tool. Sensible defaults are set for you.

  3. 3Step 3

    Download in seconds

    Click the primary action button. Your new file is ready to download instantly.

Compress PDF — FAQ

Answers to the questions people ask most about Compress PDF.

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Combine multiple PDFs into one document in seconds.